English (EN) Русский (RU) Deutsch (DE)
App
Company
About us Contact Us
Learn
Interactive training Tips for passing Docs FAQ
Use Cases
How to focus with ADD How to stay focused at work How to stay focused while studying
Resources
vs Brain Workshop Working memory exercises
English (EN) Русский (RU) Deutsch (DE)
App
Legal Information

Privacy Policy

We respect your privacy and strive to ensure maximum security of your personal data when using our trainer.

Last Updated: May 29, 2026

1. What Data We Process and Where It Is Stored

At Dual N-Back (accessible at https://dualnbackapp.com), we believe in data minimization. We do not require registration to use our trainer, and we do not store your game statistics on our servers. Below is the detailed breakdown of how your data is handled:

A. Data Stored Locally on Your Device (Privacy-First)

All your training results, progress statistics, and preferences are stored exclusively on your device using your browser's local storage (localStorage and IndexedDB). This data is never transmitted to our servers and remains under your full control. If you clear your browser cache or cookies, this data will be deleted.

  • Game Statistics: Reached N-Back levels, session scores, response accuracy, and training journal entries.
  • Interface Preferences: Selected language, volume, sound types, color theme, and speed settings.

B. Data Stored on Our Servers (Only via Active Requests)

The only data stored on our servers is the information you actively send to us when requesting help or providing feedback:

  • Support Requests: If you use our Contact Us form, we collect your email address, the classification of the issue, your message, and basic browser metadata to help resolve your inquiry.

C. De-identified Data Sent to Third-Party Processors

We use third-party analytics to understand traffic and improve usability. These services collect anonymous technical data and behavior logs:

  • Google Analytics (GA4) [Google LLC, USA]: Receives de-identified IP addresses, page views, and click events to analyze global usage trends. For more details, review Google's Privacy Policy or opt out using the Google Analytics Opt-out Browser Add-on.
  • Yandex Metrika [Yandex LLC, Russia]: Collects browser type, screen resolution, scroll depth, and interaction maps to fix display bugs. For more details, review Yandex's Privacy Policy.

2. How We Use and Share Information

We use your data to display progress charts, optimize the trainer for your device, and provide technical support. We guarantee that:

  • Your contact details and support messages will never be sold, rented, or shared with third parties for advertising or marketing purposes.
  • We do not sell or share your personal data within the meaning of the California Consumer Privacy Act (CCPA/CPRA).

3. Legal Basis for Processing (GDPR)

If you reside in the European Economic Area (EEA), our legal grounds for processing your data under GDPR include:

  • Performance of a Contract: Providing you with the core functionality of the Dual N-Back trainer (saving stats and settings locally).
  • Consent: When you voluntarily submit a support ticket via the contact form.
  • Legitimate Interests: Improving our trainer algorithms, analyzing site usage, and ensuring website security.

4. Cookies and Local Storage

We use cookies and browser local storage to maintain core functionality. Cookies set by our third-party analytics partners (Google and Yandex) help us distinguish unique users and count website visits. You can manage or disable cookies via your browser settings at any time, though some settings on the website may reset.

5. Data Retention

  • Local Data: Statistics and settings remain on your physical device indefinitely until you clear your browser's cache or local storage.
  • Support Tickets: Information submitted via contact forms is retained on our servers only for as long as necessary to resolve your request and maintain support history, up to a maximum of 12 months.

6. Your Privacy Rights & Data Deletion

Depending on your location (such as the EU/EEA under GDPR, or California under CCPA/CPRA), you have the right to access, correct, restrict, or request erasure of your data. You can exercise these rights as follows:

  • To delete or request a copy of your support communication history stored on our servers, please contact us at support@dualnbackapp.com. We will process your request within 30 days.
  • Since your training statistics are stored strictly locally, we have no access to them. You can delete them instantly by clearing your browser cache/cookies for this website.

7. Children's Privacy

Our service is not intended for children under the age of 13 (or 16 in the EU/EEA) without parental consent. We do not knowingly collect personal data from children. If you become aware that a child has sent us a support message containing personal data without parental guidance, please contact us to have it deleted.

8. Security and Transfers

All data is transmitted via secure HTTPS encryption and stored in protected databases. Since we serve a global audience, your support requests may be processed and stored on servers located outside of your home country, secured by appropriate safeguards.

9. Contact Us

If you have any questions, feedback, or legal inquiries regarding this Privacy Policy, please contact us at: